<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    .container {
      display: flex;
    }
    .left-column {
      flex: 0 0 100px;
      background-color: lightblue;
    }
    .right-column {
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .right-column div {
      height: 50px;
      background-color: lightgreen;
      margin-bottom: 10px; /* 添加一些间距 */
    }
  </style>
</head>
<body>
  <div class="container">
    <div class="left-column"></div>
    <div class="right-column">
      <div></div>
      <div></div>
    </div>
  </div>
</body>
</html>